2025年文墨小学数学口算心算天天练五年级下册人教版


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《2025年文墨小学数学口算心算天天练五年级下册人教版》

① $\frac{9}{10}÷\frac{18}{19}=$
答案: $\frac{9}{10}÷\frac{18}{19}=\frac{9}{10}×\frac{19}{18}=\frac{171}{180}=\frac{19}{20}$
② $\frac{4}{13}÷\frac{4}{13}=$
答案: $\frac{4}{13}÷\frac{4}{13}=\frac{4}{13}×\frac{13}{4}=1$
③ $\frac{7}{45}÷\frac{14}{5}=$
答案: $\frac{7}{45}÷\frac{14}{5}=\frac{7}{45}×\frac{5}{14}=\frac{35}{630}=\frac{1}{18}$
④ $\frac{7}{18}÷\frac{7}{9}=$
答案: $\frac{7}{18}÷\frac{7}{9}=\frac{7}{18}×\frac{9}{7}=\frac{63}{126}=\frac{1}{2}$
⑤ $36÷\frac{6}{11}=$
答案: $36÷\frac{6}{11}=36×\frac{11}{6}=66$
⑥ $\frac{1}{16}÷\frac{1}{4}=$
答案: $\frac{1}{16}÷\frac{1}{4}=\frac{1}{16}×4=\frac{4}{16}=\frac{1}{4}$
⑦ $\frac{7}{9}÷\frac{1}{63}=$
答案: $\frac{7}{9}÷\frac{1}{63}=\frac{7}{9}×63=49$
⑧ $\frac{3}{8}÷\frac{9}{2}=$
答案: $\frac{3}{8}÷\frac{9}{2}=\frac{3}{8}×\frac{2}{9}=\frac{6}{72}=\frac{1}{12}$
⑨ $\frac{8}{9}÷\frac{1}{72}=$
答案: $\frac{8}{9}÷\frac{1}{72}=\frac{8}{9}×72=64$
⑩ $\frac{2}{3}÷\frac{5}{12}=$
答案: $\frac{2}{3}÷\frac{5}{12}=\frac{2}{3}×\frac{12}{5}=\frac{24}{15}=\frac{8}{5}$
⑪ $72÷\frac{9}{20}=$
答案: $72÷\frac{9}{20}=72×\frac{20}{9}=160$
⑫ $\frac{8}{9}÷\frac{1}{3}=$
答案: $\frac{8}{9}÷\frac{1}{3}=\frac{8}{9}×3=\frac{24}{9}=\frac{8}{3}$
⑬ $\frac{25}{26}÷\frac{5}{8}=$
答案: $\frac{25}{26}÷\frac{5}{8}=\frac{25}{26}×\frac{8}{5}=\frac{200}{130}=\frac{20}{13}$
⑭ $\frac{1}{6}÷\frac{3}{4}=$
答案: $\frac{1}{6}÷\frac{3}{4}=\frac{1}{6}×\frac{4}{3}=\frac{4}{18}=\frac{2}{9}$
⑮ $\frac{7}{6}÷\frac{3}{4}=$
答案: $\frac{7}{6}÷\frac{3}{4}=\frac{7}{6}×\frac{4}{3}=\frac{28}{18}=\frac{14}{9}$
⑯ $\frac{1}{6}÷\frac{13}{8}=$
答案: $\frac{1}{6}÷\frac{13}{8}=\frac{1}{6}×\frac{8}{13}=\frac{8}{78}=\frac{4}{39}$
⑰ $\frac{4}{5}÷\frac{9}{10}=$
答案: $\frac{4}{5}÷\frac{9}{10}=\frac{4}{5}×\frac{10}{9}=\frac{40}{45}=\frac{8}{9}$
⑱ $\frac{2}{3}÷\frac{9}{2}=$
答案: $\frac{2}{3}÷\frac{9}{2}=\frac{2}{3}×\frac{2}{9}=\frac{4}{27}$
⑲ $\frac{2}{3}÷\frac{11}{15}=$
答案: $\frac{2}{3}÷\frac{11}{15}=\frac{2}{3}×\frac{15}{11}=\frac{30}{33}=\frac{10}{11}$
⑳ $\frac{5}{13}÷\frac{5}{6}=$
答案: $\frac{5}{13}÷\frac{5}{6}=\frac{5}{13}×\frac{6}{5}=\frac{30}{65}=\frac{6}{13}$
㉑ $\frac{4}{25}÷\frac{4}{15}=$
答案: $\frac{4}{25}÷\frac{4}{15}=\frac{4}{25}×\frac{15}{4}=\frac{60}{100}=\frac{3}{5}$
㉒ $\frac{5}{26}÷\frac{4}{13}=$
答案: $\frac{5}{26}÷\frac{4}{13}=\frac{5}{26}×\frac{13}{4}=\frac{65}{104}=\frac{5}{8}$

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